How many atoms are there in 200. Grams of carbon? How many grams are there in 1.0 x 10^24 atoms of boron?
How many grams are there in 4.5 x 10^22 atoms of silver?
How many atoms are there in 9.34 grams of lithium
How many grams do 4.3 x 10^21 atoms of zinc weigh?

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

What is the percentage of hydrogen in c2h4

How many moles of kci are produced from 2.50 moles k